> For the complete documentation index, see [llms.txt](https://tychi.gitbook.io/tychi-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tychi.gitbook.io/tychi-whitepaper/core-principles/technical-architecture.md).

# Technical Architecture

#### **1. Client Layer**

* Local key storage and signing
* Transaction review, simulation, and confirmation
* DApp interactions via WalletConnect and in-app browser
* Cold and hot wallet execution modes\
  This layer never exposes private keys to external systems.

#### **2. Service Layer**

A set of stateless services that support wallet operations without taking custody of user assets.

* **Routing & Execution**\
  Normal transactions and UGF-abstracted cross-chain actions are routed through standardized API flows.
* **Portfolio & Price Engine**\
  Multi-chain balance aggregation, token metadata, and pricing.
* **UGF Integration**\
  Quote generation, fee calculation, and cross-chain forwarding logic.

This layer improves UX but is not required for users to retain control over assets.

#### **3. Chain Integration Layer**

Connects to multiple networks through RPC providers, indexers, and relayers.

Supports:

* EVM chains
* Solana
* Sui
* Tron

#### **4. AI & Analytics Layer**

Used for insights and assistive intelligence.\
Does **not** make autonomous actions.

Provides:

* PTI signals
* Gas fee insights
* Pattern recognition
* Risk indicators